From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1)
Gecko/20031114
Description of problem:
Version-Release number of selected component (if applicable):
How reproducible:
Always
Steps to Reproduce:
1.View a message with a malformed header
2.Enjoy segfault
Additional info:
Same message does NOT segfault under latest (0.14.2.91) version of
PAN. Probably related to Pan bug #125051.
http://bugzilla.gnome.org/show_bug.cgi?id=125051
Consider -- Is this a potential security issue, with a malformed
header allowing a stack or heap based attack? Why NOT distributed the
latest version of Pan with Fedora Core 2?

this is bug: 125051 in pan.
http://bugzilla.gnome.org/show_bug.cgi?id=125051
fixed in build 0.14.2.91, jan 24th 2004
would recomend applying the patch for gmime handling referenced in the
above buzilla or reving the pan package to 0.14.2.91 for release if
possible.